Information processing system, mobile device, and power supply device

Abstract

To effectively utilize power by making proper demand-supply balance of a power system.SOLUTION: A power supply device 30 acquires a positional displacement amount between a power source side coil 31 and a mobile side coil 11 and acquires a voltage of a secondary battery 17. From a memory 42 storing information making the positional displacement amount between the power source side coil and the mobile side coil and the voltage of the secondary battery correspondent to transmissible power in a case where a non-contact power transmission is performed between the power supply device and a mobile device under a condition of the positional displacement amount and the voltage, the power supply device acquires transmissible power in a case where a non-contact power transmission is performed with a mobile device 10 based on the positional displacement amount and the voltage which are acquired, and information indicating the transmissible power is outputted to an information processing device 50. Based on information indicating transmissible power outputted from power supply devices 30 of a plurality of non-contact power transmission systems 100, the information processing device 50 derives total power by summing up each of the transmissible power and performs processing based on the total power.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The technology of the present disclosure relates to an information processing system, a mobile device, and a power supply device. [Background technology]

[0002] In recent years, research and development has been conducted into charging mobility vehicles equipped with secondary batteries that contribute to energy efficiency, in order to ensure that more people have access to affordable, reliable, sustainable, and advanced energy.

[0003] For example, research and development into charging and power supply is being conducted on contactless power transmission, which transmits power between two devices without contact.

[0004] Patent Document 1 describes a technique for estimating the positional relationship between an appropriate position of a coil used for power transmission and the current position in a power transmission system.

[0005] Patent Document 2 describes a management system for a power transmission device that can transmit power to a power reception device of a mobile body in a contactless manner.

[0006] Patent Document 3 describes a technology for detecting the position of a power receiving coil in a contactless power feeding system that feeds power from a power transmitting coil on the ground to a power receiving coil on the vehicle.

[0007] Patent Document 4 describes a contactless power transmission system that can accurately align the primary coil and secondary coil. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 2018-148704 [Patent Document 2] Japanese Patent Application Laid-Open No. 2016-220464 [Patent Document 3] International Publication No. 2017 / 203579 [Patent Document 4] Japanese Patent Application Publication No. 2018-198493 Summary of the Invention [Problem to be solved by the invention]

[0009] The technology disclosed herein aims to optimize the supply and demand balance in a power grid to enable effective use of power. [Means for solving the problem]

[0010] An information processing system according to one aspect of the present disclosure is an information processing system including an information processing device capable of communicating with a plurality of contactless power transmission systems, the contactless power transmission system including a power supply device provided at a location where a mobile body having a secondary battery can stop, and a mobile body device mounted on the mobile body and configured to be capable of contactless power transmission between the power supply device and the mobile body device, the secondary battery being capable of being charged or discharged by contactless power transmission between the power supply device and the mobile body device, the information processing device being capable of communicating with at least one of the mobile body device and the power supply device included in the contactless power transmission system, the one device being capable of detecting a positional deviation between a power supply side coil of the power supply device and a mobile body side coil of the mobile body device of the contactless power transmission system, The information processing device obtains the voltage of a secondary battery of a mobile body on which the mobile body device of the contactless power transmission system is mounted, and obtains the transmittable power when the contactless power transmission system including one of the devices performs contactless power transmission based on the obtained positional deviation and voltage from a memory unit that stores information correlating the positional deviation between the power supply side coil and the mobile body side coil, the voltage of the secondary battery, and the transmittable power when contactless power transmission is performed between the power supply device and the mobile body device under the conditions of the positional deviation and voltage, and outputs information indicating the transmittable power to the information processing device, and the information processing device derives a total power by adding up the transmittable power of each of the devices based on the information indicating the transmittable power output from each of the one of the devices of the multiple contactless power transmission systems, and performs processing based on the total power.

[0011] An information processing system according to one aspect of the present disclosure is an information processing system including an information processing device capable of communicating with a plurality of wireless power transmission systems, wherein the wireless power transmission systems include a power supply device provided at a location where a mobile body having a secondary battery can stop, and a mobile body device mounted on the mobile body and configured to be capable of wireless power transmission between the power supply device and the secondary battery, wherein the secondary battery can be charged or discharged by wireless power transmission between the power supply device and the mobile body device, and the information processing device is provided to be able to communicate with at least one of the mobile body device and the power supply device included in the wireless power transmission system, and the one device acquires a coupling coefficient between a power supply side coil of the power supply device of the contactless power transmission system including the one device and a mobile body side coil of the mobile body device of the contactless power transmission system, derives a transmittable power when the contactless power transmission system performs contactless power transmission based on the coupling coefficient, and outputs information indicating the transmittable power to the information processing device, and the information processing device derives a total power by adding up the transmittable powers of each device based on the information indicating the transmittable power output from each of the one devices of the multiple contactless power transmission systems, and performs processing based on the total power.

[0013] A mobile device according to one aspect of the present disclosure is mounted on a mobile body having a secondary battery capable of being charged or discharged by contactless power transmission, and configured to be capable of contactless power transmission between the mobile body and a power supply device provided at a location where the mobile body can stop, the mobile body including a mobile body side coil and a control unit, wherein the control unit acquires a coupling coefficient between the power supply side coil of the power supply device and the mobile body side coil, derives a transmittable power when contactless power transmission is performed with the power supply device based on the coupling coefficient, and outputs information indicating the transmittable power to an external device. the power supply device includes a capacitor that is charged by power transmitted by contactless power transmission, and the control unit controls transmission of a predetermined power from the mobile device to the power supply device, acquires a terminal voltage of the capacitor that is charged by the predetermined power, and derives the coupling coefficient based on the terminal voltage, thereby acquiring the coupling coefficient. It is something.

[0015] A power supply device according to one aspect of the present disclosure is configured to enable contactless power transmission between a mobile device mounted on a mobile body having a secondary battery that can be charged or discharged by contactless power transmission, and is provided at a location where the mobile body can stop, and includes a power supply side coil and a control unit, wherein the control unit acquires a coupling coefficient between the power supply side coil and a mobile body side coil of the mobile body device, derives a transmittable power when contactless power transmission is performed with the mobile body device based on the coupling coefficient, and outputs information indicating the transmittable power to the outside. and a capacitor that can be charged by power transmitted from the mobile device, wherein the control unit acquires a terminal voltage of the capacitor that is charged by the predetermined power while the predetermined power is being transmitted from the mobile device to the power supply device, and derives the coupling coefficient based on the terminal voltage, thereby acquiring the coupling coefficient. It is something. [Effects of the Invention]

[0016] According to the technology of the present disclosure, it is possible to optimize the supply and demand balance in the power grid and enable the effective use of power. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a schematic diagram showing an information processing system 200 according to an embodiment of the technology of the present disclosure. [Figure 2] FIG. 2 is a schematic diagram showing a specific configuration example of the contactless power transfer system 100 shown in FIG. [Figure 3] FIG. 3 is a schematic diagram illustrating the operating state of the contactless power transfer system 100 while the mobile device 10 is executing power supply control. [Figure 4] FIG. 4 is a schematic diagram showing the configuration of the contactless power transfer system 100 in the charging mode of the information processing system 200. As shown in FIG. [Figure 5] FIG. 5 is a schematic diagram illustrating a first example of the operation of the contactless power transmission system 100 when the information processing device 50 performs bidding processing to the supply and demand adjustment server 70. [Figure 6] FIG. 6 is a schematic diagram illustrating a second example of the operation of the contactless power transmission system 100 when the information processing device 50 performs bidding processing on the supply and demand adjustment server 70. In FIG. [Figure 7]FIG. 7 is a schematic diagram illustrating a third example of the operation of the contactless power transmission system 100 when the information processing device 50 performs bidding processing on the supply and demand adjustment server 70. In FIG. [Figure 8] FIG. 8 is a schematic diagram illustrating a fourth example of the operation of the contactless power transmission system 100 when the information processing device 50 performs bidding processing on the supply and demand adjustment server 70. In FIG. [Figure 9] FIG. 9 is a schematic diagram illustrating a first example of the operation of the contactless power transmission system 100 when the information processing device 50 performs processing to order power from the supply and demand adjustment server 70. In FIG. [Figure 10] FIG. 10 is a schematic diagram illustrating a second example of the operation of the contactless power transmission system 100 when the information processing device 50 performs processing to order power from the supply and demand adjusting server 70. In FIG. DETAILED DESCRIPTION OF THE INVENTION

[0018] 1 is a schematic diagram showing an information processing system 200 according to an embodiment of the technology of the present disclosure. The information processing system 200 includes a plurality of contactless power transfer systems 100, an information processing device 50 capable of communicating with the plurality of contactless power transfer systems, a power grid 80 connected to the contactless power transfer systems 100, and a supply and demand adjustment server 70 that performs processes such as adjusting the amount of power supplied from the power grid 80 to the contactless power transfer systems 100 and adjusting the amount of power supplied from the contactless power transfer systems 100 to the power grid 80. The information processing device 50, the supply and demand adjustment server 70, and the contactless power transfer systems 100 are connected to a network 60 such as the Internet.

[0019] The contactless power transfer system 100 includes a power supply device 30 provided at a location where a mobile object 10A having a secondary battery 17 (denoted as BAT in the figure) such as a lithium-ion battery or a nickel-metal hydride battery can be parked, and a mobile object device 10 mounted on the mobile object 10A and configured to enable contactless power transfer between the power supply device 30. The mobile object 10A has a drive source that is driven using, for example, the power of the secondary battery 17. The mobile object 10A is, for example, a vehicle such as an automobile, a drone, a ship, or an aircraft. The location where the mobile object 10A can be parked is, for example, a parking lot, a facility, or a house.

[0020] The contactless power transfer system 100 is configured to enable a first power transfer from the mobile device 10 to the power supply device 30 and a second power transfer from the power supply device 30 to the mobile device 10. The mobile device 10 and the power supply device 30 transfer power contactlessly using magnetic coupling between coils, such as a magnetic field resonance method or an electromagnetic induction method.

[0021] The power supply device 30 is connected to a power system 80, and is capable of charging the secondary battery 17 of the mobile body 10A on which the mobile body device 10 is mounted by transmitting power supplied from the power system 80 to the mobile body device 10. The power supply device 30 is also capable of supplying the power of the secondary battery 17 transmitted from the mobile body device 10 to the power system 80.

[0022] In the contactless power transmission system 100, at least one of the power supply device 30 and the mobile device 10 (both the power supply device 30 and the mobile device 10 in the example of FIG. 1) is connectable to a network 60 and is configured to be able to communicate with an information processing device 50. The information processing device 50 manages the contactless power transmission system 100.

[0023] The information processing system 200 can be configured to take a power supply form in which the power system 80 receives power from the contactless power transmission system 100, and a charging form in which the contactless power transmission system 100 receives the power required to charge the secondary battery 17 from the power system 80.

[0024] In this power supply mode, the information processing device 50 predicts the total amount of power that can be supplied from all of the contactless power transmission systems 100 to the power grid 80 in a predetermined cycle (e.g., one day), and, based on the predicted value, performs bidding processing for power supply to the power grid 80 for a predetermined period (e.g., one day) after the prediction value is derived. For example, the information processing device 50 performs bidding processing for power supply to the power grid 80 for the next day based on the predicted value derived in the evening of one day, to the supply and demand adjustment server 70. The supply and demand adjustment server 70 receives bids from multiple suppliers and performs a bidding process to determine which supplier will supply power. If the supplier managing the information processing device 50 wins the bid, power is supplied from the contactless power transmission system 100 to the power grid 80 on the next day, and compensation is paid to that supplier.

[0025] In the charging state, the information processing device 50 performs a power ordering process to predict the total amount of power consumed by all of the contactless power transmission systems 100 at the predetermined period and transmits the predicted value to the supply and demand adjustment server 70. Based on the predicted value, the supply and demand adjustment server 70 adjusts the amount of power generated by the power grid 80 for a predetermined period after receiving the predicted value.

[0026] In this way, in the information processing system 200, it is important to be able to more accurately grasp how much power can be supplied from all of the contactless power transmission systems 100 connected to the power system 80, or how much power needs to be supplied to all of the contactless power transmission systems 100 connected to the power system 80, in order to stabilize the supply and demand of power in the power system 80.

[0027] Fig. 2 is a schematic diagram showing a specific configuration example of the contactless power transfer system 100 shown in Fig. 1. As shown in Fig. 2, the mobile body device 10 includes a mobile body side coil 11, a resonant circuit 12 connected to the mobile body side coil 11, a first power conversion circuit 13 connected to the resonant circuit 12, a filter 14 provided between the first power conversion circuit 13 and a secondary battery 17, a voltage detection circuit 15 provided between the filter 14 and the secondary battery 17, a cutoff switch 28 provided between the voltage detection circuit 15 and the secondary battery 17, a first communication unit 18, an antenna 19, and a mobile body side control unit 20.

[0028] The resonant circuit 12 includes, for example, a capacitor connected in series to the mobile body side coil 11. During the first power transmission, the mobile body side coil 11 and the resonant circuit 12 form a power transmission unit that transmits power to the power supply device 30 by contactless power transmission.

[0029] The antenna 19 is provided in the power supply device 30 to detect the position of the movable body coil 11 .

[0030] During the first power transmission, the first power conversion circuit 13 uses power from the secondary battery 17 to generate supply power to be supplied to the mobile object side coil 11 and the resonant circuit 12, and supplies this supply power to the mobile object side coil 11 and the resonant circuit 12. The first power conversion circuit 13 includes switching elements such as transistors, and during the first power transmission, it operates, for example, as an inverter that converts the direct current supplied from the secondary battery 17 into high-frequency alternating current. The high-frequency alternating current converted by the first power conversion circuit 13 is input to the mobile object side coil 11, and high-frequency alternating current is induced by electromagnetic induction in the power supply side coil 31 of the power supply device 30, which faces the mobile object side coil 11 with a gap therebetween.

[0031] A filter 14 is provided to stabilize the power and remove noise.

[0032] The cutoff switch 28 is configured to be switchable between a connection state in which the filter 14 and the secondary battery 17 are electrically connected and a cutoff state in which this connection is cut off.

[0033] In the power supply mode of the information processing system 200, the voltage detection circuit 15 detects the terminal voltage Vb of the secondary battery 17. In the charging mode of the information processing system 200, the voltage detection circuit 15 detects the output voltage that is output from the first power conversion circuit 13 and from which noise has been removed by the filter 14.

[0034] The first communication unit 18 is an interface for performing short-distance wireless communication, which can be achieved using, for example, Wi-Fi (registered trademark) or Bluetooth (registered trademark).

[0035] The mobile object control unit 20 includes a processor such as a CPU (Central Processing Unit) and a memory, and performs various controls related to power transmission.

[0036] The power supply device 30 includes a power supply side coil 31, a resonant circuit 32 connected to the power supply side coil 31, a second power conversion circuit 33 connected to the resonant circuit 32, a capacitor 34 connected to the second power conversion circuit 33, a voltage detection circuit 35 that detects a terminal voltage Vc of the capacitor 34, a third power conversion circuit 36 ​​connected to the capacitor 34, a second communication unit 37, a detection unit 38, and a power supply side control unit 40. Although not shown in Fig. 2, the power supply device 30 is provided with a power factor correction circuit 36A (see Fig. 4), and in the charging mode of the information processing system 200, the third power conversion circuit 36 ​​in Fig. 2 is replaced with this power factor correction circuit 36A.

[0037] The resonant circuit 32 includes, for example, a capacitor connected in series to the power supply side coil 31. In the power supply form of the information processing system 200, the power supply side coil 31 and the resonant circuit 32 form a power receiving unit that receives power transmitted from the mobile device 10 by contactless power transmission.

[0038] In the power supply mode of the information processing system 200, the second power conversion circuit 33 operates as a rectifier and converts the high frequency AC input from the power supply side coil 31 into DC.

[0039] The capacitor 34 is charged by the direct current converted by the second power conversion circuit 33. In the power supply mode of the information processing system 200, the capacitor 34 is configured to be able to supply the stored power to the power system 80 connected to the third power conversion circuit 36.

[0040] The third power conversion circuit 36 ​​operates as an inverter in the power supply mode of the information processing system 200, and converts the DC discharged from the capacitor 34 into AC at the frequency of the commercial power supply. The AC at the commercial frequency converted by the third power conversion circuit 36 ​​is supplied to the power grid 80.

[0041] The second communication unit 37 is an interface for performing short-distance wireless communication, which can be achieved using, for example, Wi-Fi (registered trademark) or Bluetooth (registered trademark).

[0042] The detector 38 detects the positions of the movable body coil 11 in the X and Y directions by detecting radio waves from the antenna 19. The X and Y directions are perpendicular to each other and perpendicular to the vertical direction.

[0043] In the contactless power transfer system 100, the mobile device 10 is mounted on a mobile body 10A, so the position of the mobile body side coil 11 relative to the power supply side coil 31 varies. Hereinafter, the position of the mobile body side coil 11 relative to the power supply side coil 31 that can achieve contactless power transfer with maximum efficiency will be referred to as the reference position. The reference position is defined by coordinates in the X direction, Y direction, and Z direction when the position of the power supply side coil 31 is set as the origin.

[0044] If the movable body side coil 11 is displaced from the reference position, the amount of power that can be transmitted between the movable body device 10 and the power supply device 30 will be lower than when the movable body side coil 11 is in the reference position, depending on the amount of displacement. The amount of displacement of the position of the movable body side coil 11 from the reference position corresponds to the amount of positional displacement between the power supply side coil 31 and the movable body side coil 11.

[0045] The power supply side control unit 40 includes a processor such as a CPU (Central Processing Unit) and a memory, and performs overall control of the power supply device 30.

[0046] The power supply side control unit 40 derives a positional deviation MA of the position of the mobile body side coil 11 relative to a reference position based on information on the X-direction position Px and the Y-direction position Py of the mobile body side coil 11 detected by the detection unit 38, and information on the Z-direction position Pz of the mobile body side coil 11 acquired from the mobile body device 10 via the first communication unit 18 and the second communication unit 37. This positional deviation MA is one factor that determines the power that can be transmitted between the mobile body device 10 and the power supply device 30 (hereinafter referred to as transmittable power).

[0047] In the power supply form of the information processing system 200, the mobile body side control unit 20 of the mobile body device 10 acquires the terminal voltage Vc of the capacitor 34 of the power supply device 30, and performs power supply control to control the supply power supplied to the mobile body side coil 11 and the resonant circuit 12 via the first power conversion circuit 13 so that this terminal voltage Vc becomes a predetermined target voltage.

[0048] 3 is a schematic diagram illustrating the operating state of the contactless power transfer system 100 while the mobile device 10 is performing power supply control. When power supply control is started, the power supply side control unit 40 acquires the terminal voltage Vc from the voltage detection circuit 35 and performs control to transmit the acquired terminal voltage Vc from the second communication unit 37 to the mobile device 10. The terminal voltage Vc transmitted from the second communication unit 37 is received by the first communication unit 18 and acquired by the mobile device side control unit 20.

[0049] 3, the mobile object control unit 20 includes a comparator 21, a compensator 22, and a pulse generating unit 23. These are configured using hardware, software, or a combination of both. The comparator 21 compares the terminal voltage Vc acquired via the first communication unit 18 with a target voltage, and outputs the deviation.

[0050] Based on the deviation input from the comparator 21, the compensator 22 performs phase compensation to adjust the phase characteristics of a system that charges the capacitor 34 with power transmitted from the mobile device 10 (a charging system including the resonant circuit 12, the mobile body side coil 11, the power supply side coil 31, the resonant circuit 32, and the second power conversion circuit 33, which are arranged between the first power conversion circuit 13 and the capacitor 34), and determines the input power to the system so that the phase margin between the input and output of the system is 0 degrees or more.

[0051] The pulse generating unit 23 generates a drive pulse and supplies it to the first power conversion circuit 13 so that the power output from the first power conversion circuit 13 becomes the input power determined by the compensator 22 .

[0052] 4 is a schematic diagram showing the configuration of the contactless power transfer system 100 in the charging mode of the information processing system 200. In the charging mode, AC is supplied from the power grid 80 to the second power conversion circuit 33 via the power factor correction circuit 36A. The second power conversion circuit 33 converts the AC input from the power factor correction circuit 36A into high-frequency AC. The power supply side control unit 40 includes a comparator 43, a compensator 44, and a pulse generation unit 45, which correspond to the comparator 21, the compensator 22, and the pulse generation unit 23 in the mobile object side control unit 20, respectively.

[0053] In the charging mode, the power supply side control unit 40 acquires the terminal voltage Vb of the secondary battery 17 from the mobile device 10, and performs power supply control to control the supply power supplied to the power supply side coil 31 and the resonant circuit 32 via the second power conversion circuit 33 so that this terminal voltage Vb becomes a predetermined target voltage.

[0054] Thus, in the charging mode, the power supply side control unit 40 controls the system that charges the secondary battery 17 using power transmitted from the power supply device 30 to the mobile device 10 as the control object, and controls the input power of this control object so that the output voltage (synonymous with the terminal voltage Vb) of this control object becomes the target voltage.

[0055] When power supply control by the power supply side control unit 40 starts, the mobile object side control unit 20 acquires the terminal voltage Vb from the voltage detection circuit 15 and performs control to transmit the acquired terminal voltage Vb from the first communication unit 18 to the power supply device 30. The terminal voltage Vb transmitted from the first communication unit 18 is received by the second communication unit 37 and acquired by the power supply side control unit 40.

[0056] The comparator 43 compares the terminal voltage Vb acquired via the second communication unit 37 with the target voltage and outputs the deviation. The compensator 44 performs phase compensation to adjust the phase characteristics of the controlled object based on the deviation input from the comparator 43, and determines the input power to the controlled object so that the phase margin between the input and output of the controlled object is 0 degrees or more.

[0057] The pulse generating unit 45 generates a drive pulse and supplies it to the second power conversion circuit 33 so that the power output from the second power conversion circuit 33 becomes the input power determined by the compensator 44 .

[0058] FIG. 5 is a schematic diagram illustrating a first example of the operation of the contactless power transmission system 100 when the information processing device 50 performs bidding processing to the supply and demand adjustment server 70.

[0059] The power supply side control unit 40 includes a processor 41 and a memory 42. The memory 42 stores, in association with each other, the positional deviation amount of the movable body side coil 11 relative to a reference position, the terminal voltage of the secondary battery 17, and the maximum power (hereinafter referred to as "supplyable power") that can be transmitted from the movable body device 10 to the power supply device 30 when contactless power transmission is performed between the movable body device 10 and the power supply device 30 under the conditions of the positional deviation amount and terminal voltage. Information on the combination of the positional deviation amount and terminal voltage and the corresponding supplyable power is experimentally obtained and stored in the memory 42.

[0060] When the user of the moving body 10A aligns the moving body 10A with the power supply device 30, the moving body-side control unit 20 acquires the terminal voltage Vb from the voltage detection circuit 15. Then, the moving body-side control unit 20 transmits information on the Z-direction position Pz of the moving body-side coil 11 and information on the acquired terminal voltage Vb from the first communication unit 18 to the power supply device 30.

[0061] The processor 41 of the power supply side control unit 40 acquires information on the position Pz and information on the terminal voltage Vb transmitted from the mobile body device 10. The processor 41 also acquires information on the X-direction position Px and the Y-direction position Py of the mobile body side coil 11 from the detection unit 38. From this acquired position information, the processor 41 derives the positional deviation MA of the position of the mobile body side coil 11 relative to a reference position.

[0062] Next, based on the derived positional deviation amount MA and information on the terminal voltage Vb acquired from the mobile device 10, the processor 41 reads and acquires information on the available power supply corresponding to the combination of these from the memory .

[0063] The information on the combinations of the positional misalignment amounts and terminal voltages and the corresponding available power supplies may be stored in a server or the like connected to the network 60, rather than in the memory 42 inside the power supply device 30. In this case, the processor 41 may obtain the information on the available power supplies from the server.

[0064] When the processor 41 acquires the information on the available power supply, it transmits this information to the information processing device 50. The above operation is performed in all the contactless power transmission systems 100, so that the information processing device 50 receives information on the available power supply for the number of contactless power transmission systems 100.

[0065] The information processing device 50 derives a total power that is the sum of the available power supplies based on the information on the available power supplies received from each of the contactless power transmission systems 100. Then, the information processing device 50 performs processing based on this total power supply.

[0066] For example, based on the total power, the information processing device 50 derives a predicted value of the amount of power that can be supplied from all of the contactless power transmission systems 100 to the power grid 80 on the day following the day on which the total power was derived. Based on this predicted value, the information processing device 50 performs bidding processing on the supply and demand adjustment server 70 for the supply of power to the power grid 80 on the following day.

[0067] In the example of Figure 5, the power supply device 30 is configured to derive the available power supply and transmit the information to the information processing device 50, but it is also possible to configure the mobile device 10 to derive the available power supply and transmit the information to the information processing device 50.

[0068] FIG. 6 is a schematic diagram illustrating a second example of the operation of the contactless power transmission system 100 when the information processing device 50 performs bidding processing on the supply and demand adjustment server 70. In FIG.

[0069] 6, the mobile-object-side control unit 20 includes a processor 24 and a memory 25. The memory 25 stores the information (combinations of positional deviation amounts and terminal voltages and corresponding information on available power supply) stored in the memory 42 in the example of FIG.

[0070] When the user of the moving object 10A aligns the moving object 10A with the power supply device 30, the processor 24 of the moving object control unit 20 acquires the terminal voltage Vb from the voltage detection circuit 15.

[0071] Once the above alignment is performed, the processor 41 of the power supply side control unit 40 acquires information on the X-direction position Px and the Y-direction position Py of the mobile body side coil 11 from the detection unit 38, and transmits this information to the mobile body device 10 via the second communication unit 37.

[0072] The processor 24 of the mobile object-side control unit 20 derives the above-mentioned positional deviation MA based on the information on the positions Px and Py acquired from the power supply device 30 and the information on the position Pz of the mobile object-side coil 11 stored in the memory 25. Then, based on the derived positional deviation MA and the acquired information on the terminal voltage Vb, the processor 24 reads and acquires information on the supplyable power corresponding to these combinations from the memory 25. Upon acquiring the information on the supplyable power, the processor 24 transmits this information to the information processing device 50.

[0073] In the operation of the contactless power transmission system 100 when the information processing device 50 performs processing to order power from the supply and demand adjustment server 70, in the above description, the memory 42 or the memory 25 stores, in association with each other, the positional deviation amount of the position of the mobile body side coil 11 relative to the reference position, the terminal voltage of the secondary battery 17, and the power that can be transmitted from the power supply device 30 to the mobile body device 10 when contactless power transmission is performed between the mobile body device 10 and the power supply device 30 under the conditions of the positional deviation amount and terminal voltage (hereinafter referred to as chargeable power).The above supplyable power is then read as chargeable power.

[0074] As described above, according to the information processing system 200, in each contactless power transmission system 100, the transmittable power (supplyable power or chargeable power) determined based on the positional relationship between the mobile body side coil 11 and the power supply side coil 31 can be derived, and bidding processing or power ordering processing can be performed with the power grid 80 based on this transmittable power information.

[0075] Therefore, when the information processing system 200 is in a power supplying state, it can supply power to the power grid 80 under the conditions that were previously bid. Also, when the information processing system 200 is in a charging state, it can consume power from the power grid 80 under the conditions that were previously notified. As a result, it is possible to properly balance the supply and demand of the power grid 80, enabling effective use of power.

[0076] In the explanation so far, it has been assumed that the power supply device 30 or the mobile device 10 acquires the supplyable power or chargeable power based on information obtained experimentally.

[0077] The values ​​of both the supplyable power and the chargeable power can be derived if the state of magnetic coupling between the mobile object side coil 11 and the power source side coil 31 is known. For example, in the contactless power transfer system 100, the mobile object side control unit 20 or the power source side control unit 40 can acquire a coupling coefficient indicating the strength of magnetic coupling between the mobile object side coil 11 and the power source side coil 31, and derive the supplyable power or the chargeable power based on this coupling coefficient. Such an operation will be described below.

[0078] FIG. 7 is a schematic diagram illustrating a third example of the operation of the contactless power transmission system 100 when the information processing device 50 performs bidding processing on the supply and demand adjustment server 70. In FIG.

[0079] When the user of the moving body 10A aligns the moving body 10A with the power supply device 30, the moving body control unit 20 controls the cutoff switch 28 to the connected state. The moving body control unit 20 also generates drive pulses of a predetermined pattern (a pattern with fixed pulse width and frequency) using the pulse generation unit 23, and controls the first power conversion circuit 13 in accordance with these drive pulses, thereby controlling the power supplied to the moving body coil 11 and the resonant circuit 12 to a predetermined power (a constant value). When this control is started, a constant power is transmitted from the moving body device 10 to the power supply device 30, and this power charges the capacitor 34, causing the terminal voltage Vc to increase.

[0080] When the transmission of the above-mentioned constant power from the mobile device 10 begins, the processor 41 of the power supply side control unit 40 acquires the terminal voltage Vc from the voltage detection circuit 35, and derives the coupling coefficient between the mobile device side coil 11 and the power supply side coil 31 based on this terminal voltage Vc.

[0081] Then, the processor 41 derives the available power supply based on the derived coupling coefficient, and transmits information on the available power supply to the information processing device 50.

[0082] FIG. 8 is a schematic diagram illustrating a fourth example of the operation of the contactless power transmission system 100 when the information processing device 50 performs bidding processing on the supply and demand adjustment server 70. In FIG.

[0083] In the example of Figure 7, the processor 41 acquires the coupling coefficient and derives the available power supply, whereas in the example of Figure 8, the processor 24 of the mobile body side control unit 20 acquires the coupling coefficient and derives the available power supply.

[0084] 8, when a certain amount of power is transmitted from the mobile device 10 to the power supply device 30 in the same manner as in the example of Fig. 7, the processor 41 of the power supply side control unit 40 acquires the terminal voltage Vc from the voltage detection circuit 35 and stores data on the time series transition of this terminal voltage Vc in memory. When the processor 41 accumulates the data on the terminal voltage Vc required to derive the coupling coefficient, it transmits this data to the mobile device 10.

[0085] When the processor 24 of the mobile object-side control unit 20 acquires the data of the terminal voltage Vc transmitted from the power supply device 30, the processor 24 derives the coupling coefficient between the mobile object-side coil 11 and the power supply-side coil 31 based on this data. Then, the processor 24 derives the supplyable power based on the derived coupling coefficient and transmits information on the supplyable power to the information processing device 50.

[0086] FIG. 9 is a schematic diagram illustrating a first example of the operation of the contactless power transmission system 100 when the information processing device 50 performs processing to order power from the supply and demand adjustment server 70. In FIG.

[0087] When the user of the moving body 10A aligns the moving body 10A with the power supply device 30, the moving body control unit 20 controls the cutoff switch 28 to the cutoff state. Furthermore, the power supply control unit 40 generates drive pulses of a predetermined pattern (a pattern with fixed pulse width and frequency) using the pulse generation unit 45, and controls the second power conversion circuit 33 in accordance with these drive pulses, thereby controlling the power supplied to the power supply side coil 31 and the resonant circuit 32 to a predetermined power (a constant value). When this control is started, a constant amount of power is transmitted from the power supply device 30 to the moving body device 10, and this power is converted to direct current by the first power conversion circuit 13, causing the output voltage Vp of the first power conversion circuit 13, detected by the voltage detection circuit 15, to increase.

[0088] When the transmission of the above-mentioned constant power from the power supply device 30 begins, the processor 24 of the mobile body side control unit 20 obtains the output voltage Vp from the voltage detection circuit 15, and derives the coupling coefficient between the mobile body side coil 11 and the power supply side coil 31 based on this output voltage Vp.

[0089] Then, the processor 24 derives the chargeable power based on the derived coupling coefficient, and transmits information on the chargeable power to the information processing device 50.

[0090] FIG. 10 is a schematic diagram illustrating a second example of the operation of the contactless power transmission system 100 when the information processing device 50 performs processing to order power from the supply and demand adjusting server 70. In FIG.

[0091] In the example of Figure 9, the processor 24 acquires the coupling coefficient and derives the chargeable power, but in the example of Figure 10, the processor 41 of the power supply side control unit 40 acquires the coupling coefficient and derives the chargeable power.

[0092] 10, when a certain amount of power is transmitted from the power supply device 30 to the mobile device 10 in the same manner as in the example of Fig. 9, the processor 24 of the mobile device control unit 20 acquires the output voltage Vp from the voltage detection circuit 15 and stores data on the time series transition of this output voltage Vp in memory. When the processor 24 accumulates data on the output voltage Vp required to derive the coupling coefficient, it transmits this data to the power supply device 30.

[0093] When the processor 41 of the power supply side control unit 40 acquires the data of the output voltage Vp transmitted from the mobile body device 10, the processor 41 derives the coupling coefficient between the mobile body side coil 11 and the power supply side coil 31 based on this data. Then, the processor 41 derives the chargeable power based on the derived coupling coefficient and transmits information on the chargeable power to the information processing device 50.

[0094] As described above, according to the operation examples shown in Figures 7 to 10, the coupling coefficient between the mobile body side coil 11 and the power supply side coil 31 can be derived from the terminal voltage Vc of the capacitor 34 and the output voltage Vp of the first power conversion circuit 13 obtained by transmitting a constant amount of power between the mobile body device 10 and the power supply device 30, and the supplyable power or chargeable power can be derived based on the coupling coefficient.

[0095] In this way, by deriving the transmittable power using the coupling coefficient obtained by actually transmitting power, it is possible to derive the supplyable power or chargeable power with greater accuracy than in the operation examples shown in Figures 5 and 6. Furthermore, since there is no need to experimentally determine the chargeable power or supplyable power, the cost of building the system can be reduced.

[0096] This specification describes at least the following items. Note that the components in parentheses correspond to those in the above-described embodiment, but are not limited to these.

[0097] (1) An information processing system (information processing system 200) including an information processing device (information processing device 50) capable of communicating with a plurality of contactless power transmission systems (contactless power transmission systems 100), The contactless power transmission system includes: The system includes a power supply device (power supply device 30) provided at a location where a mobile body (mobile body 10A) having a secondary battery (secondary battery 17) can stop, and a mobile body device (mobile body device 10) mounted on the mobile body and configured to enable contactless power transmission between the power supply device and the mobile body device, the secondary battery can be charged or discharged by contactless power transmission between the power supply device and the mobile device; The information processing device includes: the power supply device is provided to be capable of communicating with at least one of the mobile device and the power supply device included in the wireless power transmission system; The one of the devices (power supply device 30 or mobile device 10) a positional deviation amount (positional deviation amount MA) between a power supply side coil (power supply side coil 31) of the power supply device of the contactless power transmission system including the one device and a mobile body side coil (mobile body side coil 11) of the mobile body device of the contactless power transmission system is acquired; The voltage (terminal voltage Vb) of a secondary battery of the mobile body on which the mobile body device of the contactless power transmission system is mounted is acquired; a storage unit (memory 42 or memory 25) that stores information correlating the amount of positional misalignment between the power supply side coil and the mobile body side coil, the voltage of the secondary battery, and the transmittable power (supplyable power or chargeable power) when contactless power transmission is performed between the power supply device and the mobile body device under the conditions of the amount of positional misalignment and voltage, and obtains the transmittable power when the contactless power transmission system including one of the devices performs contactless power transmission based on the obtained amount of positional misalignment and voltage; outputting information indicating the transmittable power to the information processing device; The information processing device includes: deriving a total power by adding up the transmittable powers of the plurality of wireless power transmission systems based on information indicating the transmittable powers output from the one of the devices of the plurality of wireless power transmission systems, and performing processing based on the total power; Information processing system.

[0098] (2) An information processing system (information processing system 200) including an information processing device (information processing device 50) capable of communicating with a plurality of contactless power transmission systems (contactless power transmission systems 100), The contactless power transmission system includes: The system includes a power supply device (power supply device 30) provided at a location where a mobile body (mobile body 10A) having a secondary battery (secondary battery 17) can stop, and a mobile body device (mobile body device 10) mounted on the mobile body and configured to enable contactless power transmission between the power supply device and the mobile body device, the secondary battery can be charged or discharged by contactless power transmission between the power supply device and the mobile device; The information processing device includes: the power supply device is provided to be capable of communicating with at least one of the mobile device and the power supply device included in the wireless power transmission system; The one of the devices (power supply device 30 or mobile device 10) a coupling coefficient between a power supply side coil (power supply side coil 31) of the power supply device of the contactless power transmission system including the one device and a mobile body side coil (mobile body side coil 11) of the mobile body device of the contactless power transmission system is obtained; Deriving transmittable power (supplyable power or chargeable power) when the contactless power transmission system performs contactless power transmission based on the coupling coefficient; outputting information indicating the transmittable power to the information processing device; The information processing device includes: deriving a total power by adding up the transmittable powers of the plurality of wireless power transmission systems based on information indicating the transmittable powers output from the one of the devices of the plurality of wireless power transmission systems, and performing processing based on the total power; Information processing system.

[0099] (3) The information processing system according to (1) or (2), The information processing device derives the total power at a predetermined period, and processes a bid for power supply to the power system (power system 80) for a predetermined period after the total power is derived based on the total power. Information processing system.

[0100] (4) A mobile body device (mobile body device 10) is mounted on a mobile body (mobile body 10A) having a secondary battery (secondary battery 17) that can be charged or discharged by contactless power transmission, and is configured to be able to transmit power contactlessly between the mobile body and a power supply device (power supply device 30) provided at a location where the mobile body can stop, a movable body side coil (movable body side coil 11); a control unit (moving body side control unit 20), The control unit Acquire a positional deviation amount (positional deviation amount MA) between a power supply side coil (power supply side coil 31) of the power supply device and the movable body side coil, The voltage (terminal voltage Vb) of the secondary battery is acquired. a storage unit (memory 25) that stores information correlating the amount of positional misalignment between the power supply side coil and the mobile body side coil, the voltage of the secondary battery, and the transmittable power (supplyable power or chargeable power) when contactless power transmission is performed between the power supply device and the mobile body device under the conditions of the amount of positional misalignment and voltage, and acquires the transmittable power when contactless power transmission is performed with the power supply device based on the acquired amount of positional misalignment and voltage; outputting information indicating the transmittable power to an external device; Mobile device.

[0101] (5) A mobile body device (mobile body device 10) is mounted on a mobile body (mobile body 10A) having a secondary battery (secondary battery 17) that can be charged or discharged by contactless power transmission, and is configured to be able to transmit power contactlessly between the mobile body and a power supply device (power supply device 30) provided at a location where the mobile body can stop, a movable body side coil (movable body side coil 11); a control unit (moving body side control unit 20), The control unit A coupling coefficient between a power supply side coil (power supply side coil 31) of the power supply device and the moving body side coil is obtained, deriving a transmittable power (supplyable power or chargeable power) when performing contactless power transmission between the power supply device and the power supply device based on the coupling coefficient; outputting information indicating the transmittable power to an external device; Mobile device.

[0102] (6) (5) A mobile device according to the present invention, The power supply device includes a capacitor (capacitor 34) that is charged by power transmitted by contactless power transmission, the control unit controls transmission of a predetermined power from the mobile device to the power supply device, acquires a terminal voltage (terminal voltage Vc) of the capacitor charged by the predetermined power, and derives the coupling coefficient based on the terminal voltage, thereby acquiring the coupling coefficient. Mobile device.

[0103] (7) (5) A mobile device according to the present invention, a power conversion circuit (first power conversion circuit 13) that converts power transmitted from the power supply device into power suitable for charging the secondary battery; the control unit acquires the output voltage (output voltage Vp) of the power conversion circuit while a predetermined power is being transmitted from the power supply device to the mobile device, and derives the coupling coefficient based on the output voltage, thereby acquiring the coupling coefficient. Mobile device.

[0104] (8) A power supply device (power supply device 30) configured to be capable of contactless power transmission between a mobile body device (mobile body device 10) mounted on a mobile body (mobile body 10A) having a secondary battery (secondary battery 17) that can be charged or discharged by contactless power transmission, and the power supply device (power supply device 30) is provided at a location where the mobile body can stop, A power supply side coil (power supply side coil 31), a control unit (power supply side control unit 40), The control unit A positional deviation amount (positional deviation amount MA) between the power supply side coil and a movable body side coil (movable body side coil 11) of the movable body device is acquired, The voltage (terminal voltage Vb) of the secondary battery is acquired. a storage unit (memory 42) that stores information correlating the amount of misalignment between the power supply side coil and the mobile body side coil, the voltage of the secondary battery, and the transmittable power when contactless power transmission is performed between the power supply device and the mobile body device under the conditions of the amount of misalignment and voltage, based on the acquired amount of misalignment and voltage, acquiring the transmittable power (supplyable power or chargeable power) when contactless power transmission is performed between the power supply device and the mobile body device; outputting information indicating the transmittable power to an external device; power supply.

[0105] (9) A power supply device (power supply device 30) configured to be capable of contactless power transmission between a mobile body device (mobile body device 10) mounted on a mobile body (mobile body 10A) having a secondary battery (secondary battery 17) that can be charged or discharged by contactless power transmission, and the power supply device (power supply device 30) is provided at a location where the mobile body can stop, A power supply side coil (power supply side coil 31), a control unit (power supply side control unit 40), The control unit A coupling coefficient between the power supply side coil and a mobile body side coil (mobile body side coil 11) of the mobile body device is obtained; deriving a transmittable power (supplyable power or chargeable power) when performing contactless power transmission between the mobile device and the mobile device based on the coupling coefficient; outputting information indicating the transmittable power to an external device; power supply.

[0106] (10) The power supply device according to (9), the mobile device includes a power conversion circuit (first power conversion circuit 13) that converts power transmitted from the power supply device into power suitable for charging the secondary battery; The control unit Controlling transmission of a predetermined amount of power from the power supply device to the mobile device; While the predetermined power is being transmitted, an output voltage (output voltage Vp) of the power conversion circuit is acquired; obtaining the coupling coefficient by deriving the coupling coefficient based on the output voltage; power supply.

[0107] (11) The power supply device according to (9), a capacitor (capacitor 34) that can be charged by power transmitted from the mobile device; The control unit While a predetermined power is being transmitted from the mobile device to the power supply device, a terminal voltage (terminal voltage Vc) of the capacitor charged by the predetermined power is acquired; deriving the coupling coefficient based on the terminal voltage to obtain the coupling coefficient; power supply. [Explanation of symbols]

[0108] 10 Mobile Devices 11 Moving body side coil 13 First power conversion circuit 17 Secondary battery 20 Mobile unit control section 30 Power supply 31 Power supply coil 34 Capacitor 40 Power supply side control unit 50 Information processing equipment 80 Power system 100 Contactless power transmission system 200 Information Processing Systems

Claims

1. An information processing system including an information processing device capable of communicating with a plurality of contactless power transmission systems, The wireless power transmission system includes: The system includes a power supply device provided at a location where a mobile body having a secondary battery can stop, and a mobile body device mounted on the mobile body and configured to be capable of contactless power transmission between the power supply device and the mobile body device, the secondary battery can be charged or discharged by contactless power transmission between the power supply device and the mobile device; The information processing device includes: the power supply device is provided to be capable of communicating with at least one of the mobile device and the power supply device included in the wireless power transmission system; The one device is acquiring a positional deviation amount between a power supply side coil of the power supply device of the contactless power transmission system including the one device and a mobile body side coil of the mobile body device of the contactless power transmission system; acquiring a voltage of a secondary battery of a mobile body on which the mobile body device of the wireless power transmission system is mounted; a storage unit that stores information correlating a positional misalignment amount between the power supply side coil and the mobile body side coil, a voltage of the secondary battery, and a transmittable power when contactless power transmission is performed between the power supply device and the mobile body device under the conditions of the positional misalignment amount and voltage, and obtains, based on the obtained positional misalignment amount and voltage, a transmittable power when the contactless power transmission system including the one device performs contactless power transmission; outputting information indicating the transmittable power to the information processing device; The information processing device includes: deriving a total power by adding up the transmittable powers of the plurality of wireless power transmission systems based on information indicating the transmittable powers output from the one of the devices of the plurality of wireless power transmission systems, and performing processing based on the total power; Information processing system.

2. An information processing system including an information processing device capable of communicating with a plurality of contactless power transmission systems, The wireless power transmission system includes: The system includes a power supply device provided at a location where a mobile body having a secondary battery can stop, and a mobile body device mounted on the mobile body and configured to be capable of contactless power transmission between the power supply device and the mobile body device, the secondary battery can be charged or discharged by contactless power transmission between the power supply device and the mobile device; The information processing device includes: the power supply device is provided to be capable of communicating with at least one of the mobile device and the power supply device included in the wireless power transmission system; The one device is obtaining a coupling coefficient between a power supply side coil of the power supply device of the contactless power transfer system including the one device and a mobile body side coil of the mobile body device of the contactless power transfer system; deriving transmittable power when the contactless power transmission system performs contactless power transmission based on the coupling coefficient; outputting information indicating the transmittable power to the information processing device; The information processing device includes: deriving a total power by adding up the transmittable powers of the plurality of wireless power transmission systems based on information indicating the transmittable powers output from the one of the devices of the plurality of wireless power transmission systems, and performing processing based on the total power; Information processing system.

3. 3. The information processing system according to claim 1, the information processing device derives the total power at a predetermined period, and processes a bid for power supply to the power grid for a predetermined period after the total power is derived based on the total power; Information processing system.

4. A mobile device is mounted on a mobile body having a secondary battery that can be charged or discharged by contactless power transmission, and is configured to be capable of contactless power transmission between the mobile body and a power supply device provided at a location where the mobile body can stop, A moving body side coil; a control unit, The control unit obtaining a coupling coefficient between a power supply side coil of the power supply device and the moving body side coil; deriving transmittable power when wireless power transmission is performed between the power supply device and the power supply device based on the coupling coefficient; outputting information indicating the transmittable power to an external device; the power supply device includes a capacitor that is charged by power transmitted by contactless power transmission; the control unit controls transmission of a predetermined power from the mobile device to the power supply device, acquires a terminal voltage of the capacitor charged by the predetermined power, and derives the coupling coefficient based on the terminal voltage, thereby acquiring the coupling coefficient. Mobile device.

5. 5. The mobile device according to claim 4, a power conversion circuit that converts power transmitted from the power supply device into power suitable for charging the secondary battery; the control unit acquires an output voltage of the power conversion circuit while a predetermined power is being transmitted from the power supply device to the mobile device, and derives the coupling coefficient based on the output voltage, thereby acquiring the coupling coefficient. Mobile device.

6. A power supply device configured to be capable of contactless power transmission between a mobile device mounted on a mobile body having a secondary battery that can be charged or discharged by contactless power transmission, and the power supply device is provided at a location where the mobile body can stop, A power supply side coil; a control unit, The control unit obtaining a coupling coefficient between the power supply side coil and a mobile body side coil of the mobile body device; deriving transmittable power when wireless power transmission is performed between the mobile device and the power source device based on the coupling coefficient; outputting information indicating the transmittable power to an external device; a capacitor that can be charged by power transmitted from the mobile device; The control unit acquiring a terminal voltage of the capacitor charged by the predetermined power while the predetermined power is being transmitted from the mobile device to the power supply device; deriving the coupling coefficient based on the terminal voltage to obtain the coupling coefficient; power supply.

7. 7. The power supply device according to claim 6, the mobile device includes a power conversion circuit that converts power transmitted from the power supply device into power suitable for charging the secondary battery; The control unit Controlling transmission of a predetermined amount of power from the power supply device to the mobile device; acquiring an output voltage of the power conversion circuit while the predetermined power is being transmitted; obtaining the coupling coefficient by deriving the coupling coefficient based on the output voltage; power supply.

Images